Block and tackle.



W. HOOD.

BLOCK AND TACKLE.

APPLICATION FILED SEPT. 16. I916.

Patented June 19. 1917.

2 SHEETS-SHEET L W 15 04. wif'hoo 5 abtowag m: NIIRRIS Ps'fERs CO 4FNOm-IJTNO" WASNINGTDN. c. c.

V w. HOOD. BLOCK AND TACKLE.

APPLICATION FILED SEPT. 16, 1916.

Patented J fine 19, 1917.

2 SHEETS-SHEET 2.

uHl HH Ame 2 M WILLIAM HOOD, OF HEMPSTZEAD, NEW YORK.

BLOCK AND TACKLE.

Application filed. September 16, 1916.

To all whom it may concern:

Be it known that I, \VILLIAM Hoop, a citizen of the United States,residing at 237 Fulton avenue, Hempstead, Long, Island, and State of NewYork, have invented certain useful Improvements. in Block and Tackle, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

The invention relates to a falland tackle and more particularly to. theclass of cable or rope controlling devices of hoisting and loweringapparatuses.

The primary object of the invention is theprovision of a device ofthis-character wherein the cable or rope used: in a hoisting andlowering apparatus is operated up'onsoas to avoid. the twisting of thecable or rope or the fouling of the stretches thereof when: trainedoverthe guide-pulleysin the-blocks oi'tackle of said apparatuswheninoperationfor raising and lowering purposes, thus enabling the perfectworking of said apparatus and increasing the life of the cable or ropethereof.

Another object of the inventionristhe provision of a device'of' thischaracter wherein the construction thereof is novel in form for theproper control of the cable or: rope so as to prevent the twisting of;the stretches of the cable or any portion thereof when used in thetackle for hoisting and. lowering of a load, for example the. raisingandlowering of a boat to and from the deck of a'vessel or other place orthe raising or lowering of any part from one pointto another, therebyeliminating. undue wear upon the cable 'orrope or excessive strainthereon.

A further ob ect of theinvention is the provision of a device of this.character which is simple in construction, automatic inaction,thoroughly reliable. and efficient: in its purpose and inexpensive inmanufacture and i installation. v

Othenobjects will-be 1n part obvious and in part hereinafter pointedout.

The invention accordingly consists in the: features ofOOIlStIHCtlOIlfiIld arrangementof elements which will be exemplified inthe construction hereinafter set forth, and the scope of the applicationof which will beindicated in the following claims.

In the accompanying drawings:

Figure 1 is an elevation of a tackle with the hoisting cable showing thedevice con- Specification of Letters Patent.

Patented June 19, 1917.

Serial No. 120,489.

structed in accordance with the invention applied thereto.

Fig. 2 isa Vertical longitudinal sectional view through the device.

Fig. 3 is atop plan View of the device.

Fig. 4 is an elevation of a modified form of the device.

Fig. 5 is a vertical longitudinal sectional view therethrough.

Fig. 6 is a sectional view on the line 66 of Fig. 5.

Similar reference characters indicate corresponding parts throughout theseveral views of the drawings.

Referring to the drawings in detail, particularly Figs-.- 1 to 3thereof, A designates a davit which is'of any well-known construc tionfor' supporting the block B of a tackle which: block carries the usualhook 10" for the hanging of the same upon the dav-it and within thisblock area plurality of pulleys 11. which are journaled therein in anysuitable manner and have trained thereover the hoisting cable 12- whichsuspends the controlling: device hereinafter fully described.

The controlling device comprises a block 13 which has journaled thereinthepulleys 14 and15 respectively over which is trained the cablelQ whilemount'ed'on'the't'op of the block 13 is a'rctatable member 16 inthis instance being-in the form of atooth gear although it maybe in any otherdesirable form and carries centrally thereof an eye 17 in which isfastened oneend of the cable 12 whichat the other endis adapted to beconnected to a Windlass or other winding device either mounted uponastationary support or upon the article to be raised or lowered. I

The pulley 14: in the block 13' is fixed to a driven shaft'18 which isadapted for connection with the rotatableelement 16 'so that motionfromthepulley ll can be imparted thereto when the cable 12"is pulled upon inthe raising'and lowering operation sothat the cable connected with theeye 17 will be turned to avoid the twisting of the cable or the foulingof the suspension stretches therements 16 there is fitted upon the shaft18 a 7 gear 19 which meshes with a pinion 20 fixed to a countershaft 21supported in a bracket 22 fastened to one end of the block 13, the shaft21 being fitted with a gear 23 meshing with an intermediate gear 24:journaled upon the top of the block 13 and meshing with the gear 16 sothat rotary motion from the pulley 141 will be transmitted to the gear16 on moving the cable 12 in the hoisting or lowering operation for thepurpose hereinbefore described. 7

To permit the throwing of the pinion 20 out of or into mesh with thegear 19 there is provided a suitable clutch 25 on the shaft 21, whichclutch is manually operated in any manner to lock the pinion 20 on theshaft 21 or to permit it to run free thereon so that an operator canrender the rotary element 16 active or inactive in the use of thecontrolling device.

The block 13 at its bottom has mounted thereon a hook 26 for the hangingof a part to be raised and lowered by the tackle and cable 12 trainedover the pulleys 11 in the block B and the pulleys 1.4: and 15 in theblock 13 of the device.

In Figs. 4, 5 and 6 there is shown a slight modification of theinvention wherein the controlling device has mounted in the block 27thereof the stationarily supported and movable rotatable pulleys 28 and29 the.

latter being mounted upon a journal 30 having fixed thereto atransmission gear 31 and this journal 30 is held in the slide yoke 82movably fitted within the block 27 with its closed end projectedexteriorly thereof and has threaded therein a fixed screw 33 which worksagainst the said blocks 27 so as to move the slide yoke 32 for changingthe position of the gear 31 to move the same into mesh with and out ofmesh from the rotary member 34 which is supported upon the top of theblock 27 and carries the eye 35 for the connection of one end of thecable thereto, it being understood of course that the cable is trainedover the pulleys 28 and 29 and when the gear 30 is out of mesh with theteeth of the rotary member 3 1 which is in the form of a gear the saidmember will be inactive upon the rope but on moving the. gear 31 in meshwith the member 34- it will. become active upon the rope to avoidtwisting thereof or the fouling of the stretches of the same whensuspended from the tackle and in operation for hoisting and loweringpurposes.

It is of course to be understood that the arrangement of the gearing andthe particular form thereof used in the controlling Copies of thispatent may be obtained for five cents each, by addressing theGommissioner of Patents, 7

device can be varied and this is contemplated within the scope of theinvention as expressed in the claims hereunto appended without departingfrom the spirit of said invention or sacrificing any of its advantages.

From the foregoing it is thought that the construction and manner of useof the block and tackle will be clearly understood and therefore a moreextended explanation has been omitted. I

VVha't is claimed is:

1. The combination with a tackle and hoisting cable Working therein, ofa controlling device comprising a block, pulleys arranged within theblock over which the cable is trained, a rotary element supported uponthe block and having a connection withone end of the cable and meansconnecting one of the pulleys in the block with the rotary element forimparting movement to the latter when the cable is active.

2. The combination with atackle and hoisting cable working therein, of acontrolling device comprising a block, pulleys arranged within the blockover which the cable is trained, a rotarv element supported upon theblock and having a connection with one end of the cable and'meansconnecting one of the pulleys in the block with the rotary element forimparting movement to the latter when the cable is active, and means forthrowing the connecting means between the pulley and rotatable elementinto and out of action.

3. In a tackle having a hoisting cable, rotatable means carried upon thetackle and having connection with one end of the cable for rotating saidend of the cable when active, means on the tackle for controlling thefirst named means to render the same inoperative upon the cable andguides in they tackle for the cable. 7

4. In a tackle having a hoisting cable working therein, of a controllingdevice comprising rotatable means having connection with the cable forrotating the free end thereof, guides for the said cable and connectionsbetween one of the guides and the rotatable means to operate the samewhen the cable is active to rotate said means.

ture.

WILLIAM HOOD.

Washington, D. G.

In testimony whereof I aifix my signa

